The U.S. Geological Surve
The U.S. Geological Survey defines this body of water's northern boundary by three lines, one of which connects Fidalgo and McGlinn Islands, and another one of which follows Deception Pass. It borders the Kitsap Peninsula and is considered part of the Salish Sea. Admiralty Inlet connects it to the Strait of Juan de Fuca. Its namesake Naval Shipyard is in Bremerton, and the largest city on its shores is the seat of King County. For 10 points, Tacoma and Seattle are the largest cities on what sound in Washington state?
The U.S. Geological Survey defines this body of water's northern boundary by three lines, one of which connects Fidalgo and McGlinn Islands, and another one of which follows Deception Pass.
{Puget Sound} [or {Puget} Sound after it is mentioned]